Finding the Fourth Proportional to 129,071,805.63, 178,118,105.61 and 70,334,289.12
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Solution
The fourth proportional to 129,071,805.63, 178,118,105.61 and 70,334,289.12 is: 97,060,781.60
Step by Step Solution
- Step 1: Write the proportion equation
129,071,805.63 : 178,118,105.61 = 70,334,289.12 : x - Step 2: Convert to fraction form
129,071,805.63/178,118,105.61 = 70,334,289.12/x - Step 3: Cross multiply
129,071,805.63x = 178,118,105.61 × 70,334,289.12 - Step 4: Simplify right side
129,071,805.63x = 12,527,810,337,480,436 - Step 5: Solve for x
x = 12,527,810,337,480,436/129,071,805.63 - Step 6: Final answer
x = 97,060,781.60
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.